Using Hemostatic Agents During Orthodontic Bonding: An In Vitro Study

Abstract

Objective: The aim of this in vitro study was to compare the effect of a traditional hemostatic agent on the shear bond strength(SBS) of conventional and self-etching bonding systems to find an efficient procedure for orthodontic bonding.Material and Methods: Extracted human premolars (n=108) were divided into 6 equal groups. Conventional light cure primerwas used in groups 1, 2, and 3. Acid etching and primer were applied directly in group 1. Enamel surfaces were covered with aAnkaferd Blood Stopper (ABS), which was used as a hemostatic agent in groups 2 and 3. Orthophosphoric acid was applied onABS-covered enamel in group 2. Before the acid was applied, the enamel surface was cleaned with wet surgical gauze in group3. A self-etching primer was used in groups 4, 5, and 6. Similar to the first 3 groups, primer was applied on the enamel surface ingroup 4. Samples were covered with ABS before the primer was applied in groups 4 and 5. The ABS residue was cleaned withgauze before primer application in group 6. The samples were debonded using a universal testing machine. In addition, SBS andresidual adhesive were evaluated.Results: Samples contaminated with hemostatic agent and bonded with the self-etching primer without cleaning the hemostaticagent showed significantly lower SBS (p,0.05). Cleaning the ABS on the enamel surfaces increased the bonding strength ofself-etching primers. Groups 5 and 6 showed significantly lower ARI scores (p,0.05).Conclusion: Before bonding orthodontic attachments with conventional and light-cure primers, ABS can be safely used.However, using self-etch primers directly on the ABS-applied enamel surface should be avoided. (Turkish J Orthod 2015;28:38–43)